Improvement in motive power for driving street-oars



P, E. McDONNELL.

Motive Power for Driving Sireet Cars.

Patented Aug. 23, 1870.

N PEIERS. Pmlo-lgmn n mr. Washington. ac

[nmwiazv patent attire.

PATRICK E. MCDONNELL, or LYONS, ILLINOIS.

Letters Patent No. 106,600, dated August 23, 187

IMPROVEMENT IN 'MO'I'IVE POWER FOR DRIVING- STREET-CARS.

The Schedule referred to in those Letters Patent and making part of the same To all whom it-nmy concern:

Be it known that I, PATRICK E. MGDONNELL, of Lyons, in the county of Cook and State of Illinois, have invented a Motive Power for Driving Street- Cars; and I do hereby declare thatthe following is a full and exact description thereof, which will enable those skilled in the art to makeand use the same, reference being bad to the accompanying drawing, and letters marked thereon, making a part of this description, in which-- Figure l is an elevation of my improved motive power.

. Figure 2, a plan view of the same.

Figure 3, the brake attachment belonging thereto.

The. present invention relates to an improved mechanism for driving cars and other land conveyances.

1 represents two boxings or platforms, which are supported by an iron frame-work, g, and which may form the platforms of a car, or supports for the body, of the car to rest upon, as any particular case may require.

Pi-voted to the frame g, and beneath the platforms, are journals, to which the inner ends of coil spn'ngs f are fastened, the outer ends of the springs being fastened to bridges rigidly fastened to gear-wheels ll d, which are fastened to the lower ends of the same journals supporting the springs. This arrangement is such that, when the springs uucoil, the said wheels will rotate and turn other gearing hereinafter mentioned.

, Ordinary ratchet-wheels and pawls q, being fastened to the journals of the gear at d, provide means for holding the springs, wound up in the usual manner.

Pinions t g, having bearings in't-he frame g, are rotated by the wheelsd, and these pinions, in tu'rh, carry wheels b, fastened to the same shafts as the pinions The wheels b drive bevel gear-wheels p, by means of pinion c placed below them, and fastened to the same. shafts. ,j

As shown at fig. 2, the bevel gear-wheels 11 have attached to" their arms inside bevel gear-wheels p".

This arrangement is such that the double-slip gear 1 2, 1 2, may be so moved by clutches 3, figs. 1 and 2,

and a lever, S, that the bevel-wheels may drive the gear 2, or the 'inner wheel 1)" may drive the wheel 1. This arrangement is made to give the springs a greater purchase on the gear that turn the journals of the car.

The shaftwhich supports the double-slip gear 1 2, 1' 2, reaches from bridge-trees m to m, antlon their inner ends they are provided with ordinary bevel gear wheels 4, which drive a bevel gear-wheel, 5, figs. 1 and 2.

r The wheel 5 is provided with double segments of teeth similar to the wheel 1), so that clutches s, operated by levers 0, may throw the pinions 4 into gear with either segment on the wheel 5, and thus increase or diminish the speed which the car is to move.

'llhejournal of wheel 5 is provided with two cranks, g, which, by means of connecting-rods 8', give are-' eiprocating motion to outside connecting-rods 9.

The rods 9 give a rotary movement to donbletoothed wheels K, by means of cranks-J.

Vertical shafts u, placed over the journals 22 of the car, support lower and upper piuions, the upper pinion being driven by either toothed segment of wheel K, and the lower one driving a wheel, :0, attached to springs 'y attached to the car-journals 22, the pinions on shaft it being thrown in and out of gear by levers q z, fig. 1.

Pivoted to the central arms 7 of the central bridgetree m are weighted pendulums 6, which are used as regulators to govern the motion of the car, and which are driven by looped connecting-rods 8' t, fig. 1, and short curved connecting-rods 8, same figure, pushing in opposite directions,

At fig. '3 is represented a'braking device, which may be at ached to the journal of the car, if desired, or reversible springs may be used, so as to overcome the inertia of starting, while at the same time the spring may brake the car.

What I claim, aml desire to secure by Letters Patcut, is k The weighted pendulums 6, operated by means of looped connecting-rods 8' t and curved rods 8., in combination with colmecting-rods 9, wheel-clutch gear 1 2, vertical shaft a carrying upper and lower pinions, pinion o, gear-wheels d k 1), wheels a;' driving the journals 22, springs f, platforms 1, the clutch-gear 1 2 being provided with suitable pinions on the inner ends oftheir shafts for driving the central wheel 5, which is provided with cranks for driving the looped connect lug-rods 8' t, as set forth. p

PA TltIOK E. MCDONNELL.

Witnesses G. S. OHAPIN,-. FRANK U. PIQlKERILL. 

